Long Range Hunting Online Magazine

Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Reloading

Reloading Berger Bullets


Pressure limit for 7 RM???

LinkBack Thread Tools Display Modes
Unread 01-26-2007, 11:09 AM
Platinum Member
Join Date: Jun 2003
Location: Hermiston, Oregon
Posts: 2,030
Pressure limit for 7 RM???

I was doing a bit of load development yesterday with my 7 RM and 160g AB + H1000. I started at 68g and went to 69g then 70g. 68g showed pressure right off the bat and was going 2950fps or so. I went to 69g and same pressure, velocity didn't move to much. Accuracy was 2 in and 1 out for both loads. I didn't test 70g as I packed up and left cuz it was gettin real windy. Anyways I know 3000fps with 160g AB and H1000 is totally doable. According to Hodgons website, They list 70g as Maximum at 2900fps. I noticed the SAAMI pressure limits were around 51,000. As I was looking around at other cartridges, they were between 60-64000. I didn't know the 7 RM couldn't be loaded to higher pressures then that. Am I missing something here?? Could this be sometimes why the 7 RM doesn't get the achieved velocities?
Reply With Quote

Unread 01-26-2007, 01:24 PM
Gold Member
Join Date: Nov 2004
Posts: 877
Re: Pressure limit for 7 RM???

check your incriments.... cup vs psi
Even after that, the older belted magnums are held to lower pressures than the new cartridges... and its perfectly safe, in a modern bolt action, to load to 64000psi. The real limiting factor is the brass, and ar what point it starts streaching.
Reply With Quote


Thread Tools
Display Modes

Similar Threads for: Pressure limit for 7 RM???
Thread Thread Starter Forum Replies Last Post
Logging on/posting time limit? Waltech Jim Website & Forum Support 8 07-09-2008 12:19 AM
MOA click limit Inukshuk Long Range Scopes and Other Optics 10 07-16-2005 02:39 PM
Range limit for this equipment? 1894 Long Range Hunting & Shooting 6 06-18-2004 09:23 PM
Seating depth? what's the limit? Al8095 The Basics, Starting Out 9 04-14-2004 07:36 AM
Seating depth? what's the limit? Al8095 The Basics, Starting Out 0 04-07-2004 06:13 AM

All times are GMT -5. The time now is 09:18 PM.

All content ©2010-2015 Long Range Hunting, LLC